// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_MESSAGE_CENTER_VIEWS_MESSAGE_BUBBLE_BASE_H_
#define UI_MESSAGE_CENTER_VIEWS_MESSAGE_BUBBLE_BASE_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_export.h"
#include "ui/views/bubble/tray_bubble_view.h"

namespace message_center {
class MessageCenterTray;

class MESSAGE_CENTER_EXPORT MessageBubbleBase {
public:
    MessageBubbleBase(MessageCenter* message_center, MessageCenterTray* tray);

    virtual ~MessageBubbleBase();

    // Gets called when the bubble view associated with this bubble is
    // destroyed. Clears |bubble_view_| and calls OnBubbleViewDestroyed.
    void BubbleViewDestroyed();

    // Sets/Gets the maximum height of the bubble view. Setting 0 changes the
    // bubble to the default size. max_height() will return the default size
    // if SetMaxHeight() has not been called yet.
    void SetMaxHeight(int height);
    int max_height() const { return max_height_; }

    // Gets the init params for the implementation.
    virtual views::TrayBubbleView::InitParams GetInitParams(
        views::TrayBubbleView::AnchorAlignment anchor_alignment)
        = 0;

    // Called after the bubble view has been constructed. Creates and initializes
    // the bubble contents.
    virtual void InitializeContents(views::TrayBubbleView* bubble_view) = 0;

    // Called from BubbleViewDestroyed for implementation specific details.
    virtual void OnBubbleViewDestroyed() = 0;

    // Updates the bubble; implementation dependent.
    virtual void UpdateBubbleView() = 0;

    // Called when the mouse enters/exists the view.
    virtual void OnMouseEnteredView() = 0;
    virtual void OnMouseExitedView() = 0;

    // Schedules bubble for layout after all notifications have been
    // added and icons have had a chance to load.
    void ScheduleUpdate();

    bool IsVisible() const;

    views::TrayBubbleView* bubble_view() const { return bubble_view_; }

    static const SkColor kBackgroundColor;

protected:
    views::TrayBubbleView::InitParams GetDefaultInitParams(
        views::TrayBubbleView::AnchorAlignment anchor_alignment);
    MessageCenter* message_center() { return message_center_; }
    MessageCenterTray* tray() { return tray_; }
    void set_bubble_view(views::TrayBubbleView* bubble_view)
    {
        bubble_view_ = bubble_view;
    }

private:
    MessageCenter* message_center_;
    MessageCenterTray* tray_;
    views::TrayBubbleView* bubble_view_;
    int max_height_;
    base::WeakPtrFactory<MessageBubbleBase> weak_ptr_factory_;

    DISALLOW_COPY_AND_ASSIGN(MessageBubbleBase);
};

} // namespace message_center

#endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_BUBBLE_BASE_H_
